CN2221786Y - High resolution geophone - Google Patents
High resolution geophone Download PDFInfo
- Publication number
- CN2221786Y CN2221786Y CN 94218469 CN94218469U CN2221786Y CN 2221786 Y CN2221786 Y CN 2221786Y CN 94218469 CN94218469 CN 94218469 CN 94218469 U CN94218469 U CN 94218469U CN 2221786 Y CN2221786 Y CN 2221786Y
- Authority
- CN
- China
- Prior art keywords
- magnetic
- shell
- coil
- detector
- eddy current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 235000014676 Phragmites communis Nutrition 0.000 abstract 1
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 229920003266 Leaf® Polymers 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model relates to a geophone especially indicates to be applicable to the supporting sensor of seismic exploration instrument. The detector core body is provided with a snap spring, a spring washer, a contact reed, a magnetic shoe, a top cover, a connecting sleeve, a magnetic shell, magnetic steel, a bottom cover, a lead sheet, a coil and a coil frame, and an annular eddy current ring is arranged at the lower section of the coil frame and between the magnetic shoe and the magnetic shell. Therefore, the resolution ratio can be improved, and the signal distortion degree can be reduced, so that the geological profile structure of a thin stratum of 3-5 meters can be distinguished, and the structure is simple.
Description
The utility model relates to a kind of seismoreceiver, especially refers to the sensor that is applicable to that seismic prospecting instrument is supporting.
At present, common seismoreceiver exists frequency band narrow, and the signal low frequency of reception is strong, a little less than the high frequency, and the signal transient dynamic range of input instrument is not enough, and magnetic damping is little again, and degree of distortion is big, and the thickness resolution on stratum can only be 10-20 rice, can not differentiate 3-5 rice thin strate.
In view of this, the purpose of this utility model provides a kind of high resolution earth-quake detector, with the magnetic damping in the eddy current ring increase magnetic circuit, the electric signal of generation is directly proportional with the acceleration of wave detector motion.
The purpose of this utility model is achieved in that a kind of high resolution earth-quake detector comprises tail nail, silicone rubber pad, lead, shell, detector core body, wherein detector core body has jump ring, spring washer, contact spring, magnetic boots, top cover, adapter sleeve, magnetic shell, magnet steel, bottom, lead wire, coil, coil former, and coil is in the gap between magnetic boots and the magnetic shell, it is characterized in that: another gap is provided with a ring-type eddy current ring between the magnetic boots of coil former and magnetic shell.
Above-mentioned eddy current ring is the high conductivity aluminium.
Owing to adopt such scheme: both can improve resolution, and can reduce signal distortion again, thereby can differentiate the stratum of 3-5 rice, and make geologic section clear and legible, and structure is also simple.
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 the utility model exemplary embodiments structural representation.
Fig. 2 the utility model exemplary embodiments core body cut-open view.
Among the figure: 1, tail nail, 2, the silicone rubber seal pad, 3, lead, 4, shell, 5, detector core body, 51, jump ring, 52, spring leaf, 53, contact spring, 54, magnetic boots, 541, conical recess, 55, top cover, 56, adapter sleeve, 57, magnetic shell, 571, garden post inside groove, 58, magnet steel, 59, bottom, 60, lead wire, 61, eddy current ring, 62, coil, 63, coil former.
As shown in Figure 1, tail nail 1 is the circular cone sounding rod, is embedded in subsurface, receives vibrations (manually burying explosive charge) arrogantly.Be prior art.
Silicone rubber seal pad 2 is in below the detector core body 5, makes waterproof sealing good, and lead 3 passes shell 4 and connects the seismograph (not shown), after treatment, reflects the geologic section structure.All belong to prior art.
As shown in Figure 2, detector core body 5, magnet steel 58 (alnico alloy) is arranged in the middle of it, and support and fixing magnetic boots 54 of magnet steel 58 (permeability magnetic material formation), the magnetic shell 57 of these magnetic boots 54 peripheries (permeability magnetic material formation), this magnetic shell 57 are supported on top cover 55 (insulating material) and the bottom 59 (insulating material); Between magnetic boots 54 and top, bottom 55,59, clamp two spring leafs 52 with contact spring 53 respectively, and these spring shim 52 edges connect a coil former 63, the epimere of this coil former 63 and between magnetic boots 54 and magnetic shell 57, connect a coil 62, its stage casing connects adapter sleeve 56 (insulating material), the above-mentioned prior art that all belongs to.
The hypomere that connects a coil former 63 at spring leaf 52 edges, and the gap is provided with an eddy current ring 61 (high conductivity aluminium) between magnetic boots 54 and magnetic shell 57, with above-mentioned magnet steel 58, magnetic boots 54, coil 62, magnetic shell 57 constitutes a magnetic loop, eddy current ring 61 in this magnetic loop increases magneto damped coefficient, make the mechanical wave of the earth vibrations be converted to electric signal, be directly proportional with the acceleration of wave detector housing motion, the seismic event pulse continuity degree that receives is shortened, distortion is little, make zone thickness resolution bring up to 3-5 rice, its frequency of operation is from 2.5HZ to 500HZ, wave detector with accelerating performance carries out signals collecting, just can reach the compacting low frequency, improve the effect of high frequency, the signal that has just solved common wave detector reception is that low frequency is strong, the problem that high frequency is weak.
In addition, magnetic boots 54 tops and bottom are provided with conical recess 541 respectively, and the inboard middle part of magnetic shell 57 is provided with cylinder inside groove 571, all are in order to reduce the leakage field of magnetic circuit.
Claims (2)
1, a kind of high resolution earth-quake detector comprises tail nail, silicone rubber pad, lead, shell, detector core body, wherein detector core body has jump ring, spring washer, contact spring, magnetic boots, top cover, adapter sleeve, magnetic shell, magnet steel, bottom, lead wire, coil, coil former, and coil is in the gap between magnetic boots and the magnetic shell, it is characterized in that: another gap is provided with a ring-type eddy current ring between the magnetic boots of coil former and magnetic shell.
2, by the described high resolution earth-quake detector of claim 1, it is characterized in that: above-mentioned eddy current ring is the high conductivity material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94218469 CN2221786Y (en) | 1994-08-17 | 1994-08-17 | High resolution geophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94218469 CN2221786Y (en) | 1994-08-17 | 1994-08-17 | High resolution geophone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2221786Y true CN2221786Y (en) | 1996-03-06 |
Family
ID=33833629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94218469 Expired - Fee Related CN2221786Y (en) | 1994-08-17 | 1994-08-17 | High resolution geophone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2221786Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901980A (en) * | 2012-08-21 | 2013-01-30 | 北京华航无线电测量研究所 | High-resolution earthquake detector and manufacturing method thereof |
-
1994
- 1994-08-17 CN CN 94218469 patent/CN2221786Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901980A (en) * | 2012-08-21 | 2013-01-30 | 北京华航无线电测量研究所 | High-resolution earthquake detector and manufacturing method thereof |
| CN102901980B (en) * | 2012-08-21 | 2015-12-16 | 北京华航无线电测量研究所 | A kind of high resolution earth-quake detector and manufacture method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |